Ventilator.



Patented Mar. 15, 1910.

I. I l Swa /Lam fi flgww WwzZZZ i ass-L (Sam ' Qw vbwaooao WiLLIAM H.BARR, or BROOKLYN, NEW YORK.

VENTILATOR.

, Specification of Letters Patent.

Application filed July 17, 1909. Serial No. 508,192.

Patented ltiz'ar;15,1910.

To oll who'm it may concern:

Be 1t known that I, VILLIAM H BARR, citizen of the United Statesresidingavt Brooklyn, in the county of Kings and State of New York, haveinvented certain. new and useful Improvements in Ventilators, of whichthe'following is a specification.

This invention relates to improvements inwindow ventilating devices andembraces the construction of means for ventilating a room adapted to beremovably secured toa window. A v

- One ofthe objects of the invention is the construction of a simpleexpansiblewindow ventilating device capable of bein attached to a windowand. held in place t jamb teeth formed on. the device.-

Another object of the invention is the construction of improved meansfor ventilating a room consisting of a windowengaging device formed forthe passage ofairtherethrough made "of two interlocking sections,

ereon by each section being formed out of a single section of materialand connected together without soldered joints.

With the above and other objects in view the invention embraces certaincombinations,

constructions and arrangements of parts, clearly illustrated in theaccompanying drawings, in which,

' Figure 1 is an inside view, in elevation, of. awmdow provided wlth myimproved Venthlating device, Fig; 2 is an enlarged view partly insection and partly in elevation showing the device mounted in positionon a window, Fig. 3 is a front elevation showing the two sections of theventilator before being joined together, Fig. 4 is a top plan viewthereoffFig 5-is a vertical sectional view'of the two ventilatorSections oined together, and Fig. 6 is a detail plan view of a portionof the ventilator, showing the manner-in'which the deviceiis forcedintoengagement with the side. of a window frame- I V v Y j .Refe'rringto the accompanying drawlngs,

' 1 denotes a windowfframe, which maybe of any-desired construction, andwhichembraces side members 2 and abottom memher 2.

The ventilating device embraces two interlocking sections 3 and 4. Each.section v of the ventilator is formed vwith an open end and a closedend. The section 4 is made.

slightly smaller thamtlie section 3'in order that it can fit in thesame. The upper'por'tioni,

or wall 5 of each section islprovided with perforations 6, for thepassage of air therethrough, and the front wall 7 is formed imperforate.On the upper wall 5 of each section a rolled edge 8 is formed, therolled edge of the section 4 being adapted to enter the roll of the edgeof section 3. The bottom wall 9 of each section is also formedimperforate. The bottomv wall 9 of the inner section 4; is formed with adepending edge 10, adapted to engage with the bottom de-' pending edge11 on the bottom wall 9 of the section 9, said edge 11 being turned up,or formed U-shape' in order that the edge 10 may ride therein. The twoengaging edges 10 and 11 are adapted to engage with the inner side ofthe bottom member 3 ofthe window frame; On the end of-each sec tion awing 12 is formed, said wing being preferably provided with a series ofteeth 12, adapted to engage the side member 2 of the window frame; Eachsection is made out of a single piece of material, the ends 13 of eachsectionbeing formed or attached to the front wall 7. The top wall 5 ofeach section is formed with a bendable flap 14, adapted to entera slit15 inthe end wall 16, and the bottom wall 9 is formed with a bendableflap 17, adapted" to enter a slit in the remaining end wall 16, and tobe bent against theinner side of the end walls.

The device may be positioned on the bottom. or on the top of the windowand when secured in position will allow for air to enter a room withoutpermitting flies or other obnoxious matter to pass into the room. Theair passing through the openmgs or apertures 6 and through the chamberof the ventilator into the room.

By expanding orcontracting the two sections upon eachother the devicecan be ad'- justed to fit any ordinary window frame.

By making the device without soldered joints the same can be shipped ina knock down 'shape and folded together very Having described myinvention I claim and desire to secure by Letters Patent 1. A ventilatorformed of two telescopic sections, said sections having top, bottom,back and end walls, the four walls of each section being integral, saidtop walls being perforated, said endw'alls depending flanges on saidbottom walls, said end walls having- .a toothed flange set at rightangles therewith, saidtop walls having their free-edges set ininterlocking rolls, as shown and described.

2. A ventilator formed of two telescopic sections, said sections havingtop, bottom, back and end walls, the four walls of each section beingintegral, said bottom walls being narrower than said top walls, saidback walls being set being perforated, said end walls having a 10toothed flange set at right angles therewith,

at an angle, said top walls said top walls having rolled interlockingedges to contact a window sash, said bottom walls having dependinginterlocking flanges,

as shown and described.

In testimony whereof I afiix my signature, 1.5

in presence of two witnesses.

- WILLIAM H. BARR. Witnesses:

J ACOB THEURER, CHAs. Ens'rnom.

